The first term of an arithmetic sequence is −22 . The common difference of the sequence is 5.
What is the sum of the first 30 terms of the sequence?
Use AP formula to find the sum:
Sum = 30/2 * [-22*2 + 5*(30 - 1)]
= 15 * [-44 + 5*29 ]
= 15 * [-44 + 145 ]
= 15 * [101]
= 1,515
